泥河水库春季水-气界面二氧化碳通量与其影响因子的相关性分析  

The Correlation Analysis between CO_2 at the Water-air Interface and Environment Factors in Nihe Reservoir in Spring

作　　者：吕东珂[1,2] 于洪贤 马成学[2] 黄璞祎[2] 

机构地区：[1]大庆石油学院,大庆163000 [2]东北林业大学,哈尔滨150040

出　　处：《湿地科学与管理》2010年第2期44-48,共5页Wetland Science & Management

基　　金：国家自然科学基金项目(30670350)

摘　　要：利用静态箱-气相色谱法对泥河水库春季水-气界面二氧化碳通量值进行连续24h观测,对其变化趋势及影响因素加以分析。结果表明:泥河水库24h均为大气CO2的源,其碳通量均值为26.50mg/(m2·h),全天源的极大值出现在1∶00为32.38mg/(m2·h),源的极小值出现在13∶00为20.15mg/(m2·h)。在春季影响泥河水库水-气界面CO2通量变化的主要因素是气温、叶绿素和风速,相关系数分别为0.671、0.625、0.253。结论:水库水-气界面CO2通量的变化是多种因素共同作用的结果,春季水库是大气CO2主要碳源之一。With static chamber-chromatographic analysis, daily variation of the carbon dioxide flux at the water-air interface for three sites of Nihe reservoir was monitored continuously for 24 hours in spring. The results showed that Nihe reservoir was a total carbon source in 24 hours with mean flux value of 26.50 （mg/m2·h）. The maximum and minimum flux values were 32.38 （mg/m2·h） and 20.15 （mg/m2·h） respectively at 1：00 and 13：00. Correlation analysis showed that air temperature, chlorophyll, alkalinity and wind speed are the main factors that affect carbon dioxide flux of Nihe reservoir in spring, with a correlation coefficient of 0.671, 0.625, 0.494 and 0.253 respectively. It was concluded that the variation of carbon flux was due to a combined effect of multiple factors. Reservoirs are one of the important carbon dioxide sources in spring.

关 键 词：泥河水库 水-气界面 CO2通量 影响因子 相关性分析 

分 类 号：X16[环境科学与工程—环境科学]